drm/amdgpu: Delete cgs wrapper functions for gpu memory manager

delete those cgs interfaces:
amdgpu_cgs_alloc_gpu_mem
amdgpu_cgs_free_gpu_mem
amdgpu_cgs_gmap_gpu_mem
amdgpu_cgs_gunmap_gpu_mem
amdgpu_cgs_kmap_gpu_mem
amdgpu_cgs_kunmap_gpu_mem

Reviewed-by: Alex Deucher <alexdeucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c

@@ -42,131 +42,6 @@ struct amdgpu_cgs_device {
 		((struct amdgpu_cgs_device *)cgs_device)->adev
 
 
-static int amdgpu_cgs_alloc_gpu_mem(struct cgs_device *cgs_device,
-				    enum cgs_gpu_mem_type type,
-				    uint64_t size, uint64_t align,
-				    cgs_handle_t *handle)
-{
-	CGS_FUNC_ADEV;
-	uint16_t flags = 0;
-	int ret = 0;
-	uint32_t domain = 0;
-	struct amdgpu_bo *obj;
-
-	/* fail if the alignment is not a power of 2 */
-	if (((align != 1) && (align & (align - 1)))
-	    || size == 0 || align == 0)
-		return -EINVAL;
-
-
-	switch(type) {
-	case CGS_GPU_MEM_TYPE__VISIBLE_CONTIG_FB:
-	case CGS_GPU_MEM_TYPE__VISIBLE_FB:
-		flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
-			AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
-		domain = AMDGPU_GEM_DOMAIN_VRAM;
-		break;
-	case CGS_GPU_MEM_TYPE__INVISIBLE_CONTIG_FB:
-	case CGS_GPU_MEM_TYPE__INVISIBLE_FB:
-		flags = AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
-			AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
-		domain = AMDGPU_GEM_DOMAIN_VRAM;
-		break;
-	case CGS_GPU_MEM_TYPE__GART_CACHEABLE:
-		domain = AMDGPU_GEM_DOMAIN_GTT;
-		break;
-	case CGS_GPU_MEM_TYPE__GART_WRITECOMBINE:
-		flags = AMDGPU_GEM_CREATE_CPU_GTT_USWC;
-		domain = AMDGPU_GEM_DOMAIN_GTT;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-
-	*handle = 0;
-
-	ret = amdgpu_bo_create(adev, size, align, true, domain, flags,
-			       NULL, NULL, &obj);
-	if (ret) {
-		DRM_ERROR("(%d) bo create failed\n", ret);
-		return ret;
-	}
-	*handle = (cgs_handle_t)obj;
-
-	return ret;
-}
-
-static int amdgpu_cgs_free_gpu_mem(struct cgs_device *cgs_device, cgs_handle_t handle)
-{
-	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
-
-	if (obj) {
-		int r = amdgpu_bo_reserve(obj, true);
-		if (likely(r == 0)) {
-			amdgpu_bo_kunmap(obj);
-			amdgpu_bo_unpin(obj);
-			amdgpu_bo_unreserve(obj);
-		}
-		amdgpu_bo_unref(&obj);
-
-	}
-	return 0;
-}
-
-static int amdgpu_cgs_gmap_gpu_mem(struct cgs_device *cgs_device, cgs_handle_t handle,
-				   uint64_t *mcaddr)
-{
-	int r;
-	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
-
-	WARN_ON_ONCE(obj->placement.num_placement > 1);
-
-	r = amdgpu_bo_reserve(obj, true);
-	if (unlikely(r != 0))
-		return r;
-	r = amdgpu_bo_pin(obj, obj->preferred_domains, mcaddr);
-	amdgpu_bo_unreserve(obj);
-	return r;
-}
-
-static int amdgpu_cgs_gunmap_gpu_mem(struct cgs_device *cgs_device, cgs_handle_t handle)
-{
-	int r;
-	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
-	r = amdgpu_bo_reserve(obj, true);
-	if (unlikely(r != 0))
-		return r;
-	r = amdgpu_bo_unpin(obj);
-	amdgpu_bo_unreserve(obj);
-	return r;
-}
-
-static int amdgpu_cgs_kmap_gpu_mem(struct cgs_device *cgs_device, cgs_handle_t handle,
-				   void **map)
-{
-	int r;
-	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
-	r = amdgpu_bo_reserve(obj, true);
-	if (unlikely(r != 0))
-		return r;
-	r = amdgpu_bo_kmap(obj, map);
-	amdgpu_bo_unreserve(obj);
-	return r;
-}
-
-static int amdgpu_cgs_kunmap_gpu_mem(struct cgs_device *cgs_device, cgs_handle_t handle)
-{
-	int r;
-	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
-	r = amdgpu_bo_reserve(obj, true);
-	if (unlikely(r != 0))
-		return r;
-	amdgpu_bo_kunmap(obj);
-	amdgpu_bo_unreserve(obj);
-	return r;
-}
-
 static uint32_t amdgpu_cgs_read_register(struct cgs_device *cgs_device, unsigned offset)
 {
 	CGS_FUNC_ADEV;
@@ -906,12 +781,6 @@ static int amdgpu_cgs_notify_dpm_enabled(struct cgs_device *cgs_device, bool ena
 }
 
 static const struct cgs_ops amdgpu_cgs_ops = {
-	.alloc_gpu_mem = amdgpu_cgs_alloc_gpu_mem,
-	.free_gpu_mem = amdgpu_cgs_free_gpu_mem,
-	.gmap_gpu_mem = amdgpu_cgs_gmap_gpu_mem,
-	.gunmap_gpu_mem = amdgpu_cgs_gunmap_gpu_mem,
-	.kmap_gpu_mem = amdgpu_cgs_kmap_gpu_mem,
-	.kunmap_gpu_mem = amdgpu_cgs_kunmap_gpu_mem,
 	.read_register = amdgpu_cgs_read_register,
 	.write_register = amdgpu_cgs_write_register,
 	.read_ind_register = amdgpu_cgs_read_ind_register,

drivers/gpu/drm/amd/include/cgs_common.h

@@ -28,18 +28,6 @@
 
 struct cgs_device;
 
-/**
- * enum cgs_gpu_mem_type - GPU memory types
- */
-enum cgs_gpu_mem_type {
-	CGS_GPU_MEM_TYPE__VISIBLE_FB,
-	CGS_GPU_MEM_TYPE__INVISIBLE_FB,
-	CGS_GPU_MEM_TYPE__VISIBLE_CONTIG_FB,
-	CGS_GPU_MEM_TYPE__INVISIBLE_CONTIG_FB,
-	CGS_GPU_MEM_TYPE__GART_CACHEABLE,
-	CGS_GPU_MEM_TYPE__GART_WRITECOMBINE
-};
-
 /**
  * enum cgs_ind_reg - Indirect register spaces
  */
@@ -130,89 +118,6 @@ struct cgs_display_info {
 
 typedef unsigned long cgs_handle_t;
 
-/**
- * cgs_alloc_gpu_mem() - Allocate GPU memory
- * @cgs_device:	opaque device handle
- * @type:	memory type
- * @size:	size in bytes
- * @align:	alignment in bytes
- * @handle:	memory handle (output)
- *
- * The memory types CGS_GPU_MEM_TYPE_*_CONTIG_FB force contiguous
- * memory allocation. This guarantees that the MC address returned by
- * cgs_gmap_gpu_mem is not mapped through the GART. The non-contiguous
- * FB memory types may be GART mapped depending on memory
- * fragmentation and memory allocator policies.
- *
- * If min/max_offset are non-0, the allocation will be forced to
- * reside between these offsets in its respective memory heap. The
- * base address that the offset relates to, depends on the memory
- * type.
- *
- * - CGS_GPU_MEM_TYPE__*_CONTIG_FB: FB MC base address
- * - CGS_GPU_MEM_TYPE__GART_*:	    GART aperture base address
- * - others:			    undefined, don't use with max_offset
- *
- * Return:  0 on success, -errno otherwise
- */
-typedef int (*cgs_alloc_gpu_mem_t)(struct cgs_device *cgs_device, enum cgs_gpu_mem_type type,
-				   uint64_t size, uint64_t align,
-				   cgs_handle_t *handle);
-
-/**
- * cgs_free_gpu_mem() - Free GPU memory
- * @cgs_device:	opaque device handle
- * @handle:	memory handle returned by alloc or import
- *
- * Return:  0 on success, -errno otherwise
- */
-typedef int (*cgs_free_gpu_mem_t)(struct cgs_device *cgs_device, cgs_handle_t handle);
-
-/**
- * cgs_gmap_gpu_mem() - GPU-map GPU memory
- * @cgs_device:	opaque device handle
- * @handle:	memory handle returned by alloc or import
- * @mcaddr:	MC address (output)
- *
- * Ensures that a buffer is GPU accessible and returns its MC address.
- *
- * Return:  0 on success, -errno otherwise
- */
-typedef int (*cgs_gmap_gpu_mem_t)(struct cgs_device *cgs_device, cgs_handle_t handle,
-				  uint64_t *mcaddr);
-
-/**
- * cgs_gunmap_gpu_mem() - GPU-unmap GPU memory
- * @cgs_device:	opaque device handle
- * @handle:	memory handle returned by alloc or import
- *
- * Allows the buffer to be migrated while it's not used by the GPU.
- *
- * Return:  0 on success, -errno otherwise
- */
-typedef int (*cgs_gunmap_gpu_mem_t)(struct cgs_device *cgs_device, cgs_handle_t handle);
-
-/**
- * cgs_kmap_gpu_mem() - Kernel-map GPU memory
- *
- * @cgs_device:	opaque device handle
- * @handle:	memory handle returned by alloc or import
- * @map:	Kernel virtual address the memory was mapped to (output)
- *
- * Return:  0 on success, -errno otherwise
- */
-typedef int (*cgs_kmap_gpu_mem_t)(struct cgs_device *cgs_device, cgs_handle_t handle,
-				  void **map);
-
-/**
- * cgs_kunmap_gpu_mem() - Kernel-unmap GPU memory
- * @cgs_device:	opaque device handle
- * @handle:	memory handle returned by alloc or import
- *
- * Return:  0 on success, -errno otherwise
- */
-typedef int (*cgs_kunmap_gpu_mem_t)(struct cgs_device *cgs_device, cgs_handle_t handle);
-
 /**
  * cgs_read_register() - Read an MMIO register
  * @cgs_device:	opaque device handle
@@ -355,13 +260,6 @@ typedef int (*cgs_enter_safe_mode)(struct cgs_device *cgs_device, bool en);
 typedef void (*cgs_lock_grbm_idx)(struct cgs_device *cgs_device, bool lock);
 
 struct cgs_ops {
-	/* memory management calls (similar to KFD interface) */
-	cgs_alloc_gpu_mem_t alloc_gpu_mem;
-	cgs_free_gpu_mem_t free_gpu_mem;
-	cgs_gmap_gpu_mem_t gmap_gpu_mem;
-	cgs_gunmap_gpu_mem_t gunmap_gpu_mem;
-	cgs_kmap_gpu_mem_t kmap_gpu_mem;
-	cgs_kunmap_gpu_mem_t kunmap_gpu_mem;
 	/* MMIO access */
 	cgs_read_register_t read_register;
 	cgs_write_register_t write_register;
@@ -404,19 +302,6 @@ struct cgs_device
 #define CGS_OS_CALL(func,dev,...) \
 	(((struct cgs_device *)dev)->os_ops->func(dev, ##__VA_ARGS__))
 
-#define cgs_alloc_gpu_mem(dev,type,size,align,handle)	\
-	CGS_CALL(alloc_gpu_mem,dev,type,size,align,handle)
-#define cgs_free_gpu_mem(dev,handle)		\
-	CGS_CALL(free_gpu_mem,dev,handle)
-#define cgs_gmap_gpu_mem(dev,handle,mcaddr)	\
-	CGS_CALL(gmap_gpu_mem,dev,handle,mcaddr)
-#define cgs_gunmap_gpu_mem(dev,handle)		\
-	CGS_CALL(gunmap_gpu_mem,dev,handle)
-#define cgs_kmap_gpu_mem(dev,handle,map)	\
-	CGS_CALL(kmap_gpu_mem,dev,handle,map)
-#define cgs_kunmap_gpu_mem(dev,handle)		\
-	CGS_CALL(kunmap_gpu_mem,dev,handle)
-
 #define cgs_read_register(dev,offset)		\
 	CGS_CALL(read_register,dev,offset)
 #define cgs_write_register(dev,offset,value)		\